Styled context menus on about:preferences

userContent-files/about_pages/preferences.css

@@ -68,7 +68,39 @@
 	
 	.navigation {
     background: var(--primary-dark-color) !important;
-}
+  }
+	
+	/*Dark context menu*/
+  menupopup, popup, popup > menu > menupopup, menupopup > menu > menupopup {
+    	-moz-appearance: none !important;
+    	background: var(--grey-70) !important;
+		  border: none !important;
+    	
+	}
+    /* Remove separator */
+  	menupopup menuseparator {
+    	padding: 0 !important;
+	}
+ 
+  	menupopup menu, menuitem {
+    	-moz-appearance: none !important;
+    	color: var(--grey-10) !important;   
+  	}
+ 
+  	menupopup menu:hover, menuitem:hover {
+    	color: var(--primary-light-color) !important;
+    	background-color: var(--grey-80) !important;
+	 }
+	
+	/* Menu Separators - removed */
+    menupopup menuseparator {
+      padding: 0 !important;
+      border-top: none !important;
+      margin: 2px 6px 2px 6px !important; 
+			-moz-appearance:none !important;
+      background: rgba(0, 0, 0, 0) !important;
+      border: 0px !important;
+    }
 	
 	
 }

userContent.css

@@ -789,6 +789,46 @@
   .navigation {
     background: var(--primary-dark-color) !important;
   }
+
+  /*Dark context menu*/
+
+  menupopup,
+  popup,
+  popup > menu > menupopup,
+  menupopup > menu > menupopup {
+    -moz-appearance: none !important;
+    background: var(--grey-70) !important;
+    border: none !important;
+  }
+
+  /* Remove separator */
+
+  menupopup menuseparator {
+    padding: 0 !important;
+  }
+
+  menupopup menu,
+  menuitem {
+    -moz-appearance: none !important;
+    color: var(--grey-10) !important;
+  }
+
+  menupopup menu:hover,
+  menuitem:hover {
+    color: var(--primary-light-color) !important;
+    background-color: var(--grey-80) !important;
+  }
+
+  /* Menu Separators - removed */
+
+  menupopup menuseparator {
+    padding: 0 !important;
+    border-top: none !important;
+    margin: 2px 6px 2px 6px !important;
+    -moz-appearance: none !important;
+    background: rgba(0, 0, 0, 0) !important;
+    border: 0px !important;
+  }
 }
 @-moz-document url(about:profiles)  {
   /* Upper right box */